http://whocallsme.com/Phone-Number.aspx/85219890037
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one post says
"Yes, got a call on 29-Apr-2010, but i refused to pick-up the call. This number generated from China, heard that some people there trying to call you and if you start talking to them for few minutes, they can actually tap to your moblie line and in future they make a call using their mobile phone and you pay their bill. I have some Chinese friends using this type of phone system that even they made long distance phone call and does not require single cent on the phone bill.
Reply !"